Detachable doorlock



ima. 1, 23.93%

J. H. 'slr-mw DETACHABLE DOORLOCK Filed, May l?, 1928 2 Sheets-Sheet 2 Patented Jan. 1, 1935 'I i i l i i f l 11,986,451 n Y 4.,nlrrzioi1-nimo nooRLooK John" 1H:j Shaw New? Haven; Conn., assignor to i J .Sargent & 'C0mpany, New Haven, Conn. A nppuoatioiiyMayjir,i928; serialNo, 278,544

j f-nClimS-F (CMU-91); My invention relatesto detachabledoor looks," maybe mortised into the door'orsecured-in `any and more especially to such :locksinrwhich the other manner upon the same. l l l detachment of thelock` is eiectedlor controlled A further object of `the invention isrto provide by the use cia key orlkeys. i c i 1 alock mechanism of the latter type in which the lg5 It is highly Adesirable in certain instances to door-handle and lock mechanism may "be de- 5 provide locks in Which 'the locking mechanism tachedasaunitfrom the door or-such other may be readily Withdrawn in orderl fto change palfiiO Which it may be attached" the Combination thereof, and for other purposes, *To thse and other ends, the invention T6011- andto this end it has been proposedt provide sists the novel features and combination of a secondary looking System,particulayfinfcylinparts tobe hereinafter described and claimed. ww

der locks, the 'secondary locking system controlnfthedrawngs; v l ling the detachmentoflthelock mechanismfand i Fig'. "1 -iS a View Showing aJPOIOn 0f adOOl being in turn vcontrolled by the operation of Ia having a lookin accordance With YUTHVBHOH key.A In'tne prior 1ooks of tnisoharaoteneach used in connection therewith;

` pin tumbler of the locking mechanism haslbeenV Fig. 2 iS a'SheCtiOIlal View lOng line 2i-2* Offl` provided withla plurality =ofobreakso`ne set-of Fg- 13 l l I breaks beiner` brought cinto eh'g'nnientwnen the Fig. 3 is asectionaivew along line 3-8 of Fig-'1, lock is operated normally inretractingaflatch but on an enlarged scale; i i bolt or the like, and another set which'i-is brought Fig,` 4 is a sectional `view along line 4--4 `of u into alignment to pemit the"` opration' ofthe` Fig. 2, but Ononllged S0316? secondary look andthe detaohmentof thelocking vFisaf is "a sectional` View along 1ine5-5 0f mechanism from its case. Aspecial'keyis pro- Fig-TSbuUOIl an enlarged SCale; l vided in each instancegfor controllingthe-opera-l Fig. 6 is a sectional viewzsimilar to Fig; 5, but tion ofthe secondary'locking system. L The presi-l` showingr Certain parts of the locking' mechanism ent. `invention relates in general to "locks offfthis ina 'dierent position; l c "type,` andhas for its'primary objectailockwhichf TFig. 7` is a sectional view along "line 7-,`7 of Fig.` `is of simple construction andle'ss aptltoget out 6; and 1 if A Y oi order than those previously proposedorinuse. l Fig;4 `8 `iS al SfCilOIiilv `View along line 88` 0i'` Another objectofth invention is to'ipovide" Fig.'3. l 'f a lock mechanism of the above type which is pro- I will 'nowdescribe my inventionhin` connec` 301 vided-With pinltumblers orithe like inwhichbut tion Withthef preferred embodiment `vthereof a single set of breaksosnecessary4-` shown in .the drawings, wherein my improved Still another object ofjtheinvention is toi'proJ form of vdetachable door loclr isshovvn in the4 .vide `a lock mechanisrn" which 'may be'fr'eadilyf formera cylinder lock carried in the handleof withdrawn from a lool:` case Without the use of, a door,alth'ough it-Willbe understood as thede- 354 tools and in `which the detachmentbf the lock scrption of the invention proceeds: that incerrnechanism is under the control of a k'ey'finserted tain aspects the invention yis not `limited `to use into the sameopening in Which thebkeyusedfor inthe Vhandle `of a door or. the like, but may be` the normal operation ofthe lockis received. used in `other and diierent` relations.

40 `Still another object of the" invention "is"'to"pro Referring then to the drawings, thereference 401 vide a lock of 'the above type in Whichthereare numeralofindioates in general a doorhaving morno exposed `or accessible portionsV of the locking tised therein alock case 10 provided With a pivoted mechanism which may be tampered "with byone latch bolt 11, to whichis connected a stem212, seekingto force the `lock,` and n` which thepart's providedat aninner end with laterally projectofthe secondary locking system are entirelylcan" ving parts 13 and 14 having thereon lugs 15 and 45- riedV Within the lock case, and "only" accessible lowhich` may be engaged by rollbacks17, 18 and ilpiinihe 115 0f -p1`0p81` keyf i 19,"in"a manner to be pointed out hereinafter,` `In amore speoic aspect, `the `invention con to retract the latch bolt 11,'-while the latter is templatesa lockhaving the above characteristics normally urged into protracted position by coml Whichis suitable-for use inithat forn'roflocking` pression spring 20 `received on and surrounding 50 mechanismfior a dooror the `like, in `Which a stem 12, one end of spring 20 being in contact portion o theflock mechanism, forinstance the with latch 11 and the opposite end in"contact` pin tumbler mechanism, is carried in theghandle with av transverse part 21 of lock caselO.

of" the door and is providedwth an extension* On either side of door 9 areescuteheon plates 53 passing into the main body of"the "11ock,-which 22 and '23 in which are mounted, `preferably in 551 the permanent manner, collars 24 and 25 having tightly received therein a tubular element 26 which is secured against rotation in and extends through the lock case 10 and outwardly through collars 24 and 25. Received within element 26 at one end thereof is a shank 27 of knob 28, while in the opposite end of tube 26 is a shank 29 of knob 30, shank r29 being provided with slots 31 and 32 in its inner end for the reception of talons 33 and 34 of rollback 17, while shank 27 of knob 28'is provided on its inner end with similar slots for the reception of the talons on rollback 19, Shank 27 is held against movement in an axial direction by means of key 26a supported in case 10 and extendingv into groove 27a in shank v27, while a similar key is received in groove 29a in shank 29. s

The shank 29 is made of two parts 35 and 36 constrained to rotate together by meansof one or more tongues 37 on part 36 received within groot/e538 Aon part 35,'while the outer end of shank 29 is provided with a disk-like flanged endr 39 provided on its. periphery with threads 40, received.v within a similar threaded portion of handle 30,"handle 30 being hollow, as shown in the l 43 and end 39 of shank 29, the threads 40 prof.

viding means for adjusting the flanged end 39 against the adjacent endof casing 42 in order to secure the latter tightly in place. One or more threaded openings 46 are provided Ipartly in han-V dle 30 and partly in wall 39 in which are received screws 47 which prevent rotational move=l ment 'of handle 30 on shank 29. ,o

Mounted incase 42 is a key plug 48-having the usual key opening 49 and a plurality oftrans-j verse openings 50.which together with a similar number of cavities 5l in case 42, contain the pin tumbler. sections 52 and springs.` 53. One end.54 of key plug 48r extends outwardly .through fa suitable opening in' handle 30, while at its' opposite end key plug 48 is provided with,a' shank 55 secured by means of pin' 56 to a thimble 57 havingreceived ina squareY opening therein a square rod 58 which ypasses throughsI similarly shaped opening` 59 in rollback 1'8 and .into an opening 60 inshank 27 of handle 28. The key plug 48 yis secured in casing 42 against vmove-- ment in an' axial directionby means of clip 61 pivotally mounted on casing 42 by means of screw 62, clip 61 being provided with a pair oflegs 63 and 64, which straddle `the received in groove 65.A f

In order to dog rollback 17 against movement and thereby to prevent the -latch 11 frombeing narily will be on the outside of the door, a pivoted withdrawn by the use of handle'BO, which orditogether vand thereby prevent rotation of handle 30. In order to cover the screws47.l and to prevent tampering therewitha shroud 73 is provided key plug 48 and areA having a cylindrical portion 74 surrounding tube 26 and received between tube 26 and collar 24 and a conical section 75 which extends outwardly and axially from cylindrical portion 74 to the adjacent end of handle 30, the outer surface of conical surface 75 conforming in shape to the shape of handle 30.

The operation of the lock mechanism described above will be readily understood `from the foregoing description and may be briefiy described as follows: The rollbacks 17, 18 and 19 are capable of independent rotary movement and the operation vof any one of the rollbacks will bring one of the talons thereon into contact with either lug'15 or lug 16, depending on which direction the rollbacks are rotated, the engagement of the talons with the lugs moving stem 12 inwardly against the compression spring 20 and withdrawing latch bolt 11 from the keeper plate in the adjacent jamb of the door. The handle 28, which willbe normally on the inside of the door, through the engagement of its shank 27 with rollback 19 is free to cause the withdrawal oflatch 11 at all times, while handle 30 through the connection of its shank 29 with rollback 17 is free to cause the withdrawal of' latch bolt 11 at all times except when the rollback 17 is dogged against movement by locking pin 69 upon being inserted into the openings 71 and 72 in tube 26 and shank 29, whereupon the handle 30 is locked against movement. In this condition of the lock mechanism the latch bolt 11 may only be actuated from the outsideof the door by means of a proper key inserted into the cylinder lock mechanism.

Upon the insertion of a proper key in key plug 48, the breaks in the pin tumblers 52 are brought into `alignment with the outer surface of key plug 48; whereupon the latter may be rotated by the. key. The end of the usual key provided for this purpose is shown in dotted lines in Fig. 7,'the end'of the key being immediately beyond the `innermost pin Vtumbler.4 Upon rotation of the key plug 48, and thereby its shank 55, the thimble 57 and square rod 58 are rotated, causing a rotary movement on the part of rollback l 18 and the withdrawal of latch bolt 11.

Sofar in the description of my invention, I have been concerned with those features of the lock mechanism which enter into the normal operation of the lock. It is highly desirable, however, to provide a lock mechanism which may be readily disassembled to change the combination Iof the lock and for other purposes and I will now describe the `features of my improved form of detachable lock which provide a suitable means to that end;

Referring again to the drawings, it will be seen that the key plug 48 is provided with a rectangular transverse slot 76 in which is slidably received a .plunger 77 which is rectangular in cross section to iit slot 76 and which is constantly urged'in one direction (downwardly, as viewed in Figs. 3, 5 and 7 of the drawings) by meansof spring 78 secured on an upper part of shank 55 by means of screws 79. Part 35 of shank 29 and tube 26 are provided with transverse slots or openings 80 and 81, respectively, through which plunger 77 is forced by spring 78, the lowerpart of plunger 77 being provided with an abutment 82 which ordinarily rides on an inner surface 83 of cylindrical part 74, as shown in dotted lines in Fig, 5. Plunger 77 is free to rotatev during the normal operation of key plug 48 in slotsV 80 and 81 to the extent that. these which they fare' iformed `but :is fnori'na1ly-heldv `against movement an `axial direction bythe transverse lradiallyldisposed Walls ofv slot-..181 inI tube V-26."'is .being understood thatplunger `'77 has` nessus 1;

it l1ivill'sbe seen .that the imechanismi presents "ex-* slots 'extend circumferentially fofthe "aparts" Ein a `Working fit rbetween ithesefvvalls. Tube 26:` is provided `with an -axiallyfextending slot 384 extending inwardly `from' the direction of yhandle 30 as far as and into slot 81, slot 84 being of a Width but slightly greater ,than V,the Width .of abutment 82(see Figs. `5, Gand 7),.` f

with respect .to the position `occupiedfby `abutment82i When thefpin tumblerparts arein alignment'with one another,;itrb`eing.necessary to rotate key'plug 48 fand thereby the plunger 77` into the position "shown :in Fig. 6 ofthe drawings, in

order to bring the abutment 82 into axial alignment `with thewslot @84; .Plunger '77 `is vprovided with anl opening ,-85V inwhich the end 86 of aspecial 'key 87 may vbereceived, thefupperedge Vof key 8,7 being -provided Withcammingsurface 88 Whichengages the upper face 89 of opening 85.

Key 86 is providedfwith suitable'notchesinorderY to properly align the pin tumblers to permitthe rotation of the `key plug.

When it is` desired to detachvthefhandle `30` andthe parts carried thereby from door 9, the operation isasfollows: Key 87vis insertedin the key opening 49, `.camming edge 88fof key-end 86 enteringthe opening 85 and camrning'.plunger7,7` into-the 4positionshownin Figs. `3 and `5. 4'Ihe notches in thebitlof thekeybring thebreak'sy in.V the pin tumblersinto alignment with the surface,-` ofthe key plug, whereupon the latter may befretated into the vposition'shown 'zin iEigsJ 6 and` '7 in which the abutment 82 is .in alignment with the slot 84. The handle 30 may'now bewithdrawn' from the `lockcase:carrying withwitcthe thimble 5'7` `and shank `part k35 :which `separates ff from -part 36 `ovvirig lto the tongue and groove" connectionrtherebetween. The screwsi'l arenow exposed and may be readily withdrawn from `openings .46 by a :suitable tool, whereupon the shank part39 may be `unscrevved fromhandle 30 andthe cylinder flock 41 withdrawn. '1. UponV changing `the combination in `cylinderlock 41 or .eiecting'` such other changes or corrections.

asmay have required thedismountingnff the lock, the cylinder lock 41 -maybe replacedinl.

handle 30 and 4thesharlk part 39 and screws''l reassembled, whereuponthe handle 30 is :ready to be reassembled Ourthe..lockr,Y y

A key 87 having notches thereon.,toproperlyf` align vthe pinsturnblersis :.againj inserted fintoI the, lock, the yplunger 77 being :again moved in tothe;

positionshown-.in Fig. 3 of the drawingsby the end'of the key. The keyplugis noW-,rotatedto bringv abutment '82 into ,proper alignment `with Y opening 84, whereupon the handlerandassociatedmechanism may bemoved axially, into the ,posi-` tio-nshowninFig. .'I,` the tongues 37 again rentering the `grooves .38 .and 4plunger 6771 coming opposite slot 8lv in vtube 26. The `key may be rotated into the position shown in Figs. 1 and3,.whereuponitmay be withdrawn from the keylplug, the

plunger 77 thereupon .being forced into the.slot` mitting actuation of the lock mechanism `by the 81 and against surface 83 by spring 178.`

From the foregoing description oi" myinvention, it will be readilyseen-that -Ihaveprovidedl a detachable lock mechanism -in-WhichV thek pin teriorly somewhat thesame general appearance as the usual lock `Which .is ,not `provided with a detachable locking. mechanism and that `the `parts offithemechanism are eiectively concealed and areinot Whereitheymay be tampered with.

While :Ihavelshownand described a preferred embodiment ofmy invention, it Will be understood that the `same is not to be limited to all the `details Vshown but is capable of modication `and y variation Withinthe spirit of the inventionand As shown in Figs. `5 and 6, Vthe'slot -84 is .olsetl thescope of the appended claims.`

VWhatI claim'is:

1. In a lock,a lock mechanism, a handle for actuating said mechanism, and means for detachably `connecting said handle to the lock mechanism, said means being key controlled, and permitting actuation of the lock mechanism by `the `handle when the latter is lockedagainst defWithin said handle, means for detachably `connecting said handle to the lock mechanism, said means being controllable by a key received `into the tumbler` mechanism; `and means permitting movement ofthe handle to actuate the lock mechanism `When the handle is locked thereto.

4.In a lock, alock mechanism, a handle for actuating said mechanisma shank onsaid handle,itumbler mechanism `in said handle, means for 4detachably connecting said shank tothe lockv mechanism,1said means being controllable by a keyfreceived intoA the tumbler mechanism, and

mansrpermitting movement of `the handle to actuate t the lock mechanism when the handle islocked thereto. i

5. Inalock, a lock mechanism, a handle for actuating saidmechanism, a tumbler mechanism in said handle, said mechanism including a key plug, means fordetachablyiconnecting said han- `dleto the lock mechanism, a part of saidlmeans being carried by said keyplug, said part `being engageable by akey received in the key plug and movable by the key into handle detaching position.A l

6. -In a loek,a lock mechanism, a handle for actuating thesame, a shankon said handle, a

tumbler mechanism mounted in said handle, Vsaid tumbler mechanism includingy a key plug, `said key plug extending into` the shank of :the handle, and keycontrolled means carried by said key plug in saidshankfor detachably securingthe latter to the `lock mechanism, `said `means permitting actuation of the .lock mechanism by the handle when the latter is locked thereto.

, 73./ In`=a lock, a lock mechanism, a handle for r actuatingthe same, and key controlled means for detachably locking the latter to the lock mechanism, said means including a plunger, and an openingin a part of the lock mechanism in Which the plunger isLnoimally received, and means perhandle when the ,parts are in locked position..

8. In a lock, a lock mechanism, a handle mechyansin yfor actuating said lock mechanism, and

ing in a part of the lock mechanism in which the ried by one ofthe mechanisms normally received inan opening in the other'mechanism.

1 0. In a lock, a lock mechanism, a handle mechanism for actuating said lock mechanism, a tumbler arrangement in said handle, means for detachably connecting said handle to the lock mechanism, said .means including a plunger carried by one ofsaid mechanisms, and an opening in l the other of said mechanisms in .which the plungsecuring said tumbler mechanism in the handle,

er isnormally received, said plunger being engageable by a key inserted into the tumbler arrangement to be moved into lhandle detaching position,'the engagement between'said plunger and opening permitting movement of the handle to actuate the lock mechanism.

1l. In a lock, a lock mechanism, a handle for actuating said mechanism, a tumbler mechanism in said handle, normally inaccessible means for and key controlled means for rendering saidy vsecuring means accessible to permit removal of the tumbler mechanism from thehandle. l.

12. In a lock, a lock mechanism, ahandle for actuating said mechanism, a tumbler mechanism secured Within said handle, said securing means being inaccessible when' the handle is mounted on saidlock mechanism,'and being accessible when the handle is removed therefrom, and key controlled means for detachably securing said handle to said lock mechanism. l

l13. In a lock, a tumbler mechanism, normally inaccessible means for securing said tumbler mechanism in said lock, and key controlled means for rendering said securing means accessible in order to dismount the tumbler mechanism from the lock. y y

14. In a lock, a lock mechanismgavhandle for actuating said mechanism, said handle being made up out of a plurality of parts, means for securing said parts against relative movement, a tumbler mechanism in said handle, means on said lock mechanism normally covering the means for preventing relative movement between the handle parts, and key controlled means for permitting said 'handle to be moved away from the covering means.

15. In ay lock, a lock mechanism, a tumbler mechanism controlling the voperation of the lock mechanism, said tumbler mechanism including a key plug, means for detachably securing the tumbler mechanism to the lock mechanism, a part of said means being carried'by the key plug and normally engaging the lock mechanism tohold the parts together, said part being engageable by a key inserted into the key plug and movable by the key into detaching position.

16.- In a lock, a lock mechanism, a tumbler vmechanism controlling the operation of the lock mechanism, said tumbler mechanism including a key plug, Vmeans for detachably vsecuring the tumbler mechanism to the lock mechanism, said means including a plunger carried by the key plug normally engaging a part of vthe lock mechanism, said plunger being engageable by a key inserted into the key plug and movable by thev key into detaching position. f

17.l In' a lock, a lock mechanism, ahandle'for actuating the same, a cylinder lock carried in said' handle, said cylinder` lock including'a key plug* and a tumbler mechanism, and means for detachably securing the handle to. the lock mechanism, said securing means including means carried by the cylinder lock and arranged to bey engaged by a key to bebrought into handledetaching position.

18.v In a lock, a lock mechanism,`.a handle for actuating the same,`a cylinder lock carried in said handle, said cylinder lock including a key plug and a tumbler mechanism, and means for detachably securing the handle to the lock mechanism, said securing means including means carried by the'key plug and arranged to beengaged by a key to be brought into handledetaching position.

- 19. Ina lock, al lock mechanism, a handle for actuating the same, a cylinder lock carried in said handle, said cylinder lockjincluding a key rplug and a tumbler mechanism, and means for detachably securing the vhandle to the lockmechanism, said securing 'means including a plunger carried by the key plug and arranged to be engaged by a key to be brought into handle detaching position.

20. In a lock, a lock mechanismya handle for actuating the same, a cylinder lock carried in said handle, said cylinder lock including' a key plugl and a tumbler mechanism, and means for detachably securing thehandle to the lock mechanism, said securing means including a plunger carried by the key plug and a groove in the lock mechanism in which the plunger is normally received, said plungerbeing adapted to be engaged by a key and moved in the groove into handle detaching position.

{21.1'In a lock, a lock mechanism, a handle for actuating the same, a cylinder'lock carried in said handle, said cylinder lock including a key plug anda tumbler mechanism, and means for detachably securing the handle to the. lock mechanism, said securing means including a plunger carried by the key plug and a groove inthe lock mechanism in which the plunger is normally received, said plunger being adapted to be engaged by a key and moved in the groove into handle detaching position, and a`- spring urging said plunger into said groove. i

22.' In a lock, a lock mechanism, a handle for actuating the same, a cylinder lock carried in said handle, said cylinder lockfinclu'ding a key plug anda tumbler mechanism and means for detachably securing the handle to the 'lock mechanism, said securing means including aplunge'r carried by the cylinder lock, a part of the lock mechanism being provided With a circumferential groove and an axial groove extending'inwardly into said circumferential groove, said plunger being normally received in the circumferential groove and adapted to be engaged by a key inserted in the key plug to be partly Withdrawn from the circumferential groove and rotated into'a position opposite'the axial groove.

2,3. In a lock, a lock mechanism, a'handle for actuating the same, a cylinder lock carried in said handle, said cylinder lock including'a key plug and a tumbler mechanism, and means for detachably securing the handle to the lock mechanism, said securing means including a vplunger carried bythe key plug, a part of the 'lock mechanism being provided With a circumferential groove and an axial groove extending inwardly into the circumferential groove, said .plungerV being normally received in the circumferential groove and adapted to be engaged by a key inserted in the key `plug to be partly withdrawn from the circumferential groove and rotated into a position opposite the axial groove.

`24:. In a lock, a lock mechanism, a handle for actuating the same, `a cylinder lock carried in said handle, said cylinder lock includinga key plug and, a tumbler mechanism,` and means for detachably securing the handle to the lock mechanism, said securing means including a plunger carried by the key plug, a part of the .lockmechanism being provided with a circumferential groove and an axial groove extendinginwardly into the `circumferential groove, said plunger being' normally received in `the `circumferential i groove and adapted to be engaged by a key inserted in the key plug to be partly withdrawn from the circumferential groove and rotated into a position opposite the axial groove, and resilient means normally urging said-plungerfinto the` circumferential groove. i

, 25. `In a lock, a bolt, a handle,-and a plurality of selectively operable key operatedmeans for retracting the bolt or detaching the handle.`

26. In a lock, a bolt, a handle for retractingthe bolt, and a pluralityof selectively operablekey operated means for retracting the bolt or detaching the handle.

27. In a door lock, a bolt, a case associated with the lock, and having locking `mechanism housed therein and removable lbodily therefrom, and a plurality of key-'operated means for selectively A operating the bolt or detaching thecase from the door.

28. In a lock, a lock mechanism, a handle for actuating the same, said handlebeing separable from and attachable to said mechanism by movement in a longitudinal direction, and key controlled means for securing said handle to the lock "mechanism, said means permitting actuating movement of the handle when the latter is locked to the lock mechanism. i

29. A lock having a frame, a knob having a shank attached to the frame, and a key-controlled member in engagement with said shank and frame for holding the shankfrom longitudinal movement for removal but permitting turning movement thereof, said key-controlled member being adapted to be retracted from said frame to `and said retaining section carrying a rollback operable by said plug. I Y

, 32. A door lockV comprising two sections, one

' of which is adapted to be secured to the door,

and a rollback movably carried by said one section, the other of said sections being removably securable to the rst section and containing a key operated plug, means for operably connecting said plugto the rollback, and key operated means for securing the said sections together.

33. Aedoor lock comprising two sections, one of which is adapted to be secured to the door, and

a rollback movably carried by said one section, the `other of said sections being removably securable to the rst section and containing a key operated plug, means for operably connecting said plug to the rollback,` and key operated means for securing :the said sections together, said removably secured section having a part telescoped with the other section and a part abutting the end of the other section. i i

34. In a lock, a knob, a lock casing carried by said knob, ashank member removably secured to said knob and holding said lock casing within said knob, a shank member to be secured to a door and cooperating withV the shank member `on said knob, a plug fo'r said lock casing, `and key operated means tobe carried by said plug for locking `said shank members together.

35. In a lock, a knob, a lock casing carried by Said knob, a-shank member removably secured to said knob, means tobe carriedby a door and cooperating with said shank member, and key operated` means carried by said lock casing for holding said shank and means to be carried by a door against longitudinal displacement.

36. In a lock, a knob, a lock casing carried by said knob, a shank member in screw threaded engagement withsaid knob, a second shank member to 'be secured to a door, and key actuated means carried by said lock casing for detachably holding said shank members against longitudinal displacement.

37. In a, look, a knob comprising two separable parts, key actuatable means within saidknob and i,

partially projectingto the rear thereof, a rotatable hollow knob spindle, a mounting therefor independent of said knob, part of said key actu-` atable means `normally connecting said knob to said hollow spindle against longitudinal separation, a second key rotatable spindle passing through `said hollow spindle, and rotatable by another part of said key actuatable means independently of said hollow spindle.

38. The combination with a hollow spindle of a lock, of ay knob having a shank telescoping `with said spindle and connected theretofor endwise` removal therefrom, and a key-controlled springpressed latchfmember extending` through said telescoping parts `to secure them together, said knob being provided with a keyhole to receive a key to control said latch member.

39. `The combination withV a spindle in a lock, of a knob and knob shank secured to the spindle for endwiseremoval therefrom, `a key-controlled depressible latch member extending radially through the spindle and knob shank to secure the knob against such endwise removal, and said knob being provided with a keyhole to receive a key to control said latch member.

. JOHN H. SHAW. 

